/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.lealone.db.async;

import org.lealone.common.exceptions.DbException;

class FailedFuture<T> implements Future<T> {

    private final Throwable cause;

    public FailedFuture(Throwable cause) {
        this.cause = cause;
    }

    @Override
    public T get() {
        throw DbException.convert(cause);
    }

    @Override
    public T get(long timeoutMillis) {
        return get();
    }

    @Override
    public Future<T> onSuccess(AsyncHandler<T> handler) {
        return this;
    }

    @Override
    public Future<T> onFailure(AsyncHandler<Throwable> handler) {
        handler.handle(cause);
        return this;
    }

    @Override
    public Future<T> onComplete(AsyncHandler<AsyncResult<T>> handler) {
        handler.handle(new AsyncResult<>(cause));
        return this;
    }
}
